"Main database and vault signatures do not match or are invalid" error

I installed MainType 7 on a Windows 10 machine and I get this error when I try to run it. Any suggestions?
MainType Error.jpg

I’m sorry about the inconvenience. Do a full uninstall, and then reinstall the font manager. This should fully reset MainType.

Let us know your results.

took 3 tries but it finally installed. Thanks